In order to increase the capacity and transmission reliability of
wireless cooperative networks, multiple antennas are deployed to
gain the merits of MIMO processing techniques
[1]}, [2]}, [3]}, [4]}, [5]}, [6]}.
In this strategy, distributed space-time coding (DSTC) was proposed
to further boost network performance, where the antennas at the
distributed relays are utilized as transmit antennas to generate a
space-time code for the receiver
[7]}, [8]}. A
differential DSTC was proposed in [9]} to
eliminate the requirement of channel information at the relays and
the receiver. The combined benefits of maximum-ratio combining (MRC)
and DSTC were investigated in
[10]}. In
[11]}, the impact of DSTC in two-way
amplify-and-forward relay channels was characterized.
